Amazing what having a diagram can do!
Non working coils is due to a dodgy interboard connector... ground on far right wasnt in place... need a new one of these.
Drop target making kick out coil fire was in the end a faulty 7404 @ Z12... looking through the schematic i think only one gate is used on this chip. I went to test the gate and saw that one leg wasnt in the socket..LOL.
Replaced chip and problem solved.
Couple of switches not working.... one dead display. 2 drops that are like bricks!
Apart from that... all good!!!!